Miami Dolphins safety Don Jones also expressed his disapproval, tweeting "horrible" and "OMG" after the kiss was aired. He has since deleted those comments.

In an image taken from video, Michael Sam, left, and boyfriend Vito Cammisano kiss at an NFL draft party in San Diego. Sam was selected in the seventh round, 249th overall, by the St. Louis Rams.

But the Dolphins responded quickly, ordering Jones to pay an undisclosed fine and barring him from team activities until he finishes "training for his recent comments made on social media."

"We met with Don today about respect, discrimination and judgment," the Dolphins said in a statement Sunday. "These comments are not consistent with the values and standards of our program."

Jones issued a mea culpa for his remarks.

"I want to apologize to Michael Sam for the inappropriate comments that I made last night on social media," he said in a statement Sunday.

"I take full responsibility for them and I regret that these tweets took away from his draft moment. I remember last year when I was drafted in the seventh round and all of the emotions and happiness I felt when I received the call that gave me an opportunity to play for an NFL team and I wish him all the best in his NFL career."

Sam's boyfriend, Vito Cammisano, a former University of Missouri swimmer who graduated last year and now interns for a broadcasting company in Columbia, Missouri, wasn't fazed by the vitriol and publicly celebrated his lover's achievement.

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First openly gay player drafted in NFL

Openly gay athletes – Swimmer Ian Thorpe, seen here in 2004 with one of his five Olympic gold medals, told an Australian news outlet that he is gay in an interview that aired on Sunday, July 13. Click through to see other openly gay athletes.

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Photos: Openly gay athletes25 photos

Openly gay athletes – Former Missouri defensive end Michael Sam told ESPN and The New York Times that he is gay on February 9. Sam later became the first openly gay player to be drafted by a NFL team when he was taken by the St. Louis Rams in the seventh round.

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Photos: Openly gay athletes25 photos

Openly gay athletes – Robbie Rogers became the first openly gay male athlete to play in a professional American sporting match when he took the field for Major League Soccer's Los Angeles Galaxy during a match against the Seattle Sounders on May 26.

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Granderson: Kiss a sign of NFL progress

The Kansas City native first tweeted, "We are staying home! Could not be more proud of my babe! #stl #rams #missouri," then followed it up a few hours later with "Wow.What a day. On cloud 9. So proud and happy! #stl #rams #draft @MikeSamFootball."

The second tweet linked to a close-up of Cammisano, his face covered in cake, sharing another smooch with Sam.

"It's annoying that people can't say anything about the Michael Sam kiss without people pointing at them saying "homophobe," Robby Schultz said.

But many welcomed Sam's seventh-round selection by the St. Louis Rams. His new team is just two hours away from the University of Missouri, where Sam was an All-American and the Southeastern Conference's defensive player of the year.

"Welcome to the squad @MikeSamFootball #D-LineShowtime," fellow Rams defensive end Robert Quinn tweeted.

President Barack Obama also weighed in.

"The President congratulates Michael Sam, the Rams and the NFL for taking an important step forward today in our Nation's journey," the White House said in a statement. "From the playing field to the corporate boardroom, LGBT Americans prove everyday that you should be judged by what you do and not who you are."